An extraordinary library and archive dedicated to the history of the Arctic and Antarctic poles.

Singapore's landscaping project is home to 18 incredible Supertrees.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

Eighty million natural history specimens call this gargantuan museum home.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Hear the quietest sound from across the dome.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An ancient Egyptian temple in the middle of Madrid, Spain.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

The largest 19th century panorama in the world still in-situ.

A miniature city, once ruled by the Queen of the Netherlands.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A well kept and well documented look at the Bruneian Sultan's life and successes.

A symbol of Islam in oil-rich Brunei.

1800 rooms of single-family residence in Brunei.

Ferdinand Magellan dubbed the world's largest water village the "Venice of the East."

Khmer Rouge's high security prison.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

More than 200 statues filled with cryptic symbols give this park spot an aura of horror vacui fantasy.